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/*
 * Copyright 2017. Crown Copyright
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package uk.gov.gchq.gaffer.spark;

import org.apache.spark.serializer.KryoSerializer;

import uk.gov.gchq.gaffer.spark.serialisation.kryo.Registrator;

/**
 * Utility class containing constants for use with the Spark library.
 */
public final class SparkConstants {
    public static final String KRYO_REGISTRATOR = "spark.kryo.registrator";
    public static final String SERIALIZER = "spark.serializer";
    public static final String APP_NAME = "spark.appname";
    public static final String DEFAULT_APP_NAME = "Gaffer";
    public static final String MASTER = "spark.master";
    public static final String MASTER_DEFAULT = "local[*]";
    public static final String USE_SPARK_DEFAULT_CONF = "gaffer.spark.useSparkDefaultConf";
    public static final String SPARK_DEFAULT_CONF_PATH = "spark.conf.path";
    public static final String DEFAULT_SPARK_DEFAULT_CONF_PATH = "/opt/spark/conf/spark-defaults.conf";
    public static final String DEFAULT_KRYO_REGISTRATOR = Registrator.class.getName();
    public static final String DEFAULT_SERIALIZER = KryoSerializer.class.getName();

    private SparkConstants() {
        // Private constructor to prevent instantiation.
    }
}